JPH0239007Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Use) The present invention relates to an improvement of a cylinder lock used in a lock device for locking the opening and closing of a door.

(Prior Art) As shown in FIG. 6, in the cylinder lock conventionally used in door locking devices, when the key is inserted into the keyhole ₁₀ and the cylinder ₂₀ is rotated, the tip of the cylinder ₂₀ is locked. The lever ₃₀ fixed to the lock moves to the dotted line position, and this movement activates the lock latch, which is installed in the lock device together with the cylinder lock ₄₀ , so that its tip protrudes outside the lock device and faces the lock latch. It locks the door by fitting it into a hole in a pillar, etc.

Most of the cylinder locks ₄₀ use a case ₅₀ that holds the cylinder ₂₀ made of a round brass bar.

In such a cylinder lock ₄₀ , the case ₅₀ has a high processing precision, so the cylinder ₂₀ can be held in a good state, and the cylinder ₂₀ can be rotated smoothly.Furthermore, the locking device can be assembled with high precision, so the lock latch can be easily operated. This has the advantage of allowing the locking process to be carried out smoothly and also improving the appearance of the locking device.

(Problem to be solved by the invention) Cylinder lock using brass case 5 ₀ 4 ₀
Although it has the above-mentioned advantages, it is inevitably expensive due to high material and processing costs, and has the disadvantage of increasing the cost of the locking device.

There are plans to use stainless steel instead of brass to compensate for this drawback, but machining would still result in high processing costs and the cylinder lock would not be as cheap, and when incorporated into a locking device, it would be less expensive than brass. This has the disadvantage that the appearance is poor, reducing the commercial value of the locking device.

(Means for Solving the Problems) The present invention was made by focusing on such conventional problems, and instead of fundamentally reconsidering the structure itself and cutting the brass, By using a combination case consisting of a deep-drawn case made by drawing and pressing metal plates such as iron and stainless steel, which had previously been considered difficult, and an inner lid, we have significantly reduced the price of cylinder locks and solved the above problems. It aims to solve the problem.

The present invention has one or more protrusions elongated in the axial direction on the inside of the body, and a male screw extending in the circumferential direction on the outside thereof, and the bottom part has one or more protrusions elongated in the axial direction on the inside thereof, and A bottomed cylindrical case with a through hole of a required diameter whose center is offset to one side of the body, and a flange for fixing the lid at the open end; a shaft in the lid that matches the axis; A through hole of a required diameter whose center is at a position offset by the same dimension as the center of the through hole from the axis to one of the edges on the diameter passing through the center, and a peripheral end of the through hole with the axis. Both holding pieces are arranged symmetrically across a plane passing through the diameter of the through-hole and provided with a required gap, and extend a required length to the open end side at right angles to the lid portion, and an axial center and a stepped protrusion forming an axially oriented groove on the opposite side of the through hole on a plane passing through the diameter of the through hole, and locking portions having the same number as the protrusions that fit into the protrusion. a short cylindrical inner lid with a bottom that fits inside the case; the protrusion and the locking part are fitted together, and the through hole and the through hole are opposed to each other for a tight fit; This is a cylinder lock in which a cylinder is attached to a combination case fixed via the holding pieces and the groove.

(Function) The case and inner cover are press-fitted at the protrusions and locking parts,
Furthermore, since they are fixed through a groove, they will not rotate or come off each other in the circumferential direction, and in addition, the through holes are aligned and face each other with their axes aligned. Therefore, both functions as a single case. In addition, the cylinder is locked by both holding pieces and the groove, and is further held between the bottom of the case and the lid of the inner lid, so it is securely held in the completely fixed combination case and cannot be rotated inside. This will never happen, and it can be used with no functional difference from conventional cylinder locks.

(Example) The present invention will be described in detail below based on an example shown in FIGS. 1 to 5.

1 is a cylindrical case with a bottom made by deep-drawing a steel body by drawing press processing, and there are two elongated cases on the outside of the body 2 symmetrically on a plane b passing through the axis a. In order to form the protrusion 3, two elongated grooves 5 of a predetermined length are provided from the bottom 4 toward the open end, and a circumferential male screw 6 is provided along a predetermined length from the bottom 4 toward the open end. The bottom part 4 has an axis a on a diameter c passing through the axis a perpendicular to the plane b.
A through hole 7 having the same diameter as the outer diameter of the rotating portion 10 of the cylinder 9 is provided, and the center d is located at a position offset by a predetermined distance to one side of the body 2, and a decorative lid 13 is further fixed to the open end of the body 2. A tsuba 8 is provided.

Reference numeral 14 denotes a short cylindrical inner cover with a bottom, which is fitted into the case 1 made of a steel plate by drawing press processing, and is composed of a cover part 15 and an edge part 16 that is bent around the periphery and the vicinity of the periphery of the cover part 15; The lid part 15 has a cylinder having a center d' at a position offset from the axis a' to one of the edges 16 by the same dimension as the center d of the through hole 7 on a diameter c' that is perpendicular to the axis a'. A through hole 17 having the same diameter as the outer diameter of the outer shell 11 of No. 9 is provided, and the peripheral end of the through hole 17 is aligned with the axis.
symmetrically across a plane e passing through a' and diameter c' and centered on the axis.
The side near a' is the base 12' of the cylinder 9 leg part 12.
A holding piece 19,1 for holding the outer shell 11 of the cylinder 9 is provided with a gap 18 of the same size as the thickness of
A cylinder 9 is provided inside the edge 16 on the opposite side of the through hole 17 on the surface e.
The stepped protrusion 21 is provided so as to form a gutter-like groove 20 in the direction of the axis a' into which the lower end of the leg 12 is inserted, and the lower end of the stepped protrusion 21 is made to have the same circumference as the edge 16. A protruding bottom portion 22 is provided extending in an arc shape, and a surface passing through the axis a' perpendicular to the surface e is provided.
A recess 23 is formed symmetrically on b′ in the direction of the axis a′, which is located at a predetermined distance from the protrusion 3, and the lower end of the recess 23 extends in an arc shape so as to have the same circumference as the edge 16. The concave bottom 24 is provided with a notch 25 that tightly fits with the protrusion 3.

Decorative lid 13 made of brass plate by drawing press processing
is a lid edge 26 whose periphery is bent at a right angle, and an axis a.
and on the diameter c″ passing through the axis a″ which coincides with the axis a′,
The center d'' is located at a position offset by the same dimension as the centers d and d' of the through holes 7 and 17 toward one side of the lid edge 26 from the axis a'', which is the same as the outer diameter of the rotating part 10 of the cylinder 9. A hole 27 having the same diameter is provided, and the peripheral end of the hole 27 extends toward the open end at right angles to the surface of the decorative lid 13 to provide a hole edge 28.

A method of assembling the cylinder lock 29 will now be described. First, the base 12' of the leg part 12 is placed in the gap so that the rotating part 10 at one end 9' where the keyhole 30 of the cylinder 9 is located is inserted into the through hole 17 of the inner lid 14.
In addition, the lower end of the leg portion 12 is connected to the groove 20, and the outer shell 11
are inserted between the two holding parts 19, 19, respectively, and the cylinder 9 is fitted to the inner lid 14. Next, cylinder 9
After fitting the notch 25 to the protrusion 3 and inserting the cylinder 9 and the inner cover 14 into the case 1 so that the rotating part 10 at the other end 9'' is inserted into the through hole 7 of the case 1, the cylinder 9 and the inner cover 14 are inserted into the case 1. Fix the inner lid 14 to the case 1 by tightening the outer part of the groove 5 where the bottom part 24 is located.Next, insert the rotating part 10 on the one end 9' side of the cylinder 9 into the hole 27 of the decorative lid 13. At the same time, the hole edge 28 of the decorative lid 13 is fitted into the through hole 17 of the inner lid 14, the decorative lid 13 is placed over the flange 8 of the case 1, and the lid edge 26 is bent around the flange 8 to decorate. The cylinder lock 29 is completed by fixing the lid 13 to the case 1 and further fixing the lever 31 to the tip of the rotating part 10 on the other end 9'' side of the cylinder 9 protruding from the bottom 4 of the case 1.

In this case, the case 1 and the inner lid 14 are fixed by press-fitting the protrusion 3 and the notch 25 and by tightening the outer part of the groove 5 where the concave bottom 24 is located. The inner cover 14 does not rotate relative to each other in the circumferential direction, and the inner cover 14 does not come off from the case 1. Moreover, the through holes 7 and 17 are aligned with the axis a.
Since they face each other with their axes a' aligned, they function completely as one case. Furthermore, the cylinder 9 can be rotated in the circumferential direction since the base 12' of the leg 12 is locked in the gap 18 between the holding pieces 19 and 19 of the inner cover 14, and the lower end of the leg 12 is locked in the groove 20. Furthermore, both ends of the rotating part 10 are fitted into the through holes 7 and 17, respectively, and are held by the case 1 and the inner cover 14, which are completely fixed, so that the cylinder 9 can be moved stably and reliably. Operate. Furthermore, since the decorative brass lid 13 is used on the front surface of the cylinder lock 29 which is exposed to the outside when the cylinder lock 29 is assembled into the lock device, the appearance is no different from that of a conventional cylinder lock, reducing the commercial value of the lock device. I have nothing to do.

In the above embodiment, the case 1 and the inner lid 1
In No. 4, a steel plate was produced by drawing press processing, but plates of stainless steel, aluminum, brass, etc. may be used instead of steel plates, and furthermore, instead of producing these metal plates by drawing press processing, suitable composites can be used. It may also be manufactured by molding or other processing using resin. In addition, two protrusions 3 and notches 25 are provided symmetrically on planes b and b' passing through the axis a and a', but this is done by fitting the protrusions 3 and the notches 25 to connect the case 1 and the interior. Since it is provided to prevent the lid 14 from rotating in the circumferential direction, it is not symmetrical and
One or three or more may be provided. Further, the through hole 7 of the case 1, the through hole 17 of the inner lid 14, and the hole 27 of the decorative lid 13 vary depending on the shape of the cylinder 9 used, and in short, it is sufficient that their centers are coaxial. . Furthermore, although the case 1 and the inner lid 14 are prevented from rotating in the circumferential direction by fitting the protrusion 3 with the locking part of the cutout 25, the concave bottom 24 is eliminated and the protrusion 3 is used instead of the cutout 25. A locking portion consisting of a recessed groove in the direction of the axis a' that is tightly fitted may be provided on the edge 16 to prevent rotation. Furthermore, although the protruding bottom portion 22 is provided on the inner cover 14 to improve the fit between the case 1 and the inner cover 14, it is not necessary to provide the protruding bottom portion 22 if the machining accuracy of the edge portion 16 is good. Also, the through hole 17 of the inner lid 14
Although the gap 18 is provided between the holding pieces 19, 19 only on the side near the axis a', a gap similar to the gap 18 may be provided on the side far from the axis a'.

(Effect of idea) Since the present invention has the above configuration, it has the following effects.

(1) The cost of cylinder locks can be significantly reduced by using a combination case made by drawing press processing, etc., and an inner cover fitted together.

(2) Since it is assembled using an inexpensive cylinder lock, the cost of the lock device can be reduced.

(3) Since a combination case is used, the cylinder lock can reduce the weight of the locking device, making it easier to handle.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention. Figure 1 is a cylinder lock, A is a front view, B is a side view, C is a front view with the lid removed, and Figure 2 is a case. ,
A is a bottom view, B is a side view, C is an A-A sectional view, Figure 3 is the inner lid, A is a top view, B is a bottom view, C is B
-B sectional view, Figure 4 is a decorative lid, A is a plan view, B is a C-C cross section, Figure 5 is a cylinder, A is a front view, B is a side view, C is a rear view, Figure 6 is a conventional cylinder lock; A is a front view, B is a side view, and C is a rear view. 1...Case, 2...Body, 3...Protrusion, 4...
... Bottom, 5 ... Groove, 6 ... Male screw, 7 ... Through hole, 8 ... Flange, 9 ... Cylinder, 13 ... Decorative lid, 14 ... Inner cover, 15 ... Lid, 16 ... ... Edge, 17 ... Through hole, 18 ... Gap, 19 ... Holding piece, 20 ... Concave groove, 21 ... Step protrusion, 23 ...
Recessed portion, 25... Notch, 29... Cylinder lock,
a...Axis, a'...Axis, c...Diameter passing through axis a, c'...Diameter passing through axis a', d, d'...Center,
e...A plane passing through the axis c' and the diameter c'.

Claims (1)

[Claims for Utility Model Registration] (1) One or more projections elongated in the axial direction on the inside of the body, a male thread extending in the circumferential direction on the outside thereof, and a male screw extending in the axial direction on the bottom part. A bottomed cylindrical case having a through hole of a required diameter whose center is located at a position diametrically offset to one side of the body from the axis, and a flange for fixing a lid at the open end; on the lid; a through hole of a required diameter whose center is at a position offset from the axis to one of the edges by the same dimension as the center of the through hole on a diameter passing through the axis that coincides with the axis;
and both the peripheral ends of the through hole are made to extend for the required length toward the open end side at right angles to the lid portion, symmetrically with a required gap between the axis and a plane passing through the diameter of the through hole. a holding piece; a stepped portion forming an internal concave groove in the axial direction on the opposite side of the through hole on a plane passing through the axis and the diameter of the through hole; and the protrusion; a bottomed short cylindrical inner lid provided with the same number of locking parts as the projections to be fitted into; the projections and the locking parts are fitted together, and the through holes are opposed to each other for a tight fit; Furthermore, the cylinder lock is formed by attaching a cylinder to the combination case fixed via the groove through both the holding pieces and the groove. (2) Utility model registration claim 1, which is characterized by using a case in which protrusions are provided symmetrically on a plane passing through the axis and perpendicular to the plane passing through the axis.
Cylinder lock as described in section.